Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a artilharia principal para os 1.051 navios?
 ###Tabelas: CREATE TABLE slam_dunk_contest (slam_dunk_contest_id AUTO_INCREMENT PRIMARY KEY, Pos. VARCHAR, Player VARCHAR, Team VARCHAR, Height VARCHAR, Weight INT) CREATE TABLE general_electric (general_electric_id AUTO_INCREMENT PRIMARY KEY, PRR Class VARCHAR, Builder’s Model VARCHAR, Build date VARCHAR, Total produced INT, Wheel arrangement VARCHAR, Service VARCHAR, Power output VARCHAR) CREATE TABLE navies_and_ships_involved (navies_and_ships_involved_id AUTO_INCREMENT PRIMARY KEY, Warship VARCHAR, tons ( L.ton ) VARCHAR, Horse- power INT, Speed ( Knots ) INT, Main Artillery VARCHAR, Built Year INT) CREATE TABLE honours (honours_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Division VARCHAR, Place VARCHAR, Played INT, Drawn VARCHAR, Lost VARCHAR, G.F. VARCHAR, G.A. VARCHAR, G.D. VARCHAR, Points INT) CREATE TABLE locomotives_withdrawn_from_service (locomotives_withdrawn_from_service_id AUTO_INCREMENT PRIMARY KEY, 'Name' or designation VARCHAR, Wheel arrangement VARCHAR, Builder VARCHAR, Year built VARCHAR, Year withdrawn VARCHAR)  
SELECT Main Artillery FROM navies_and_ships_involved WHERE tons ( L.ton ) = 1,051